Kookie Tickle from Allora had a working 1930s cream dairy on display. The dairy is made up of components from five farms and the cheeky cow is plumbed to pee on passers-by. Kookie says there's no money in agriculture any more. "There was probably 500 dairymen in the Allora area, now there's about four," he said. (ABC : Nathalie Fernbach )

The displays may have been vintage but the crowd and competitors weren't: 11 year old Bill Sizer from Millmerran teamed up with his older sister Rachelle and eight-year-old Charlie Mitchell to tackle the tractor sled pulling competition. (ABC : Nathalie Fernbach )

Kevin Bathurst volunteers with the First CQ Light Horse Brigade to showcase equipment used in World War I. Kevin says they try to recreate everything as authentically as possible. "I think it is a great thing for young people to be able to see what was done by our troops then and the horses and I think it is good to be able to help," he said. (ABC: Nathalie Fernbach )

The Marshall Colonial tractors attracted a lot of attention. Organisers say it was the first time two Marshall Colonials moving under their own power have been together in more than a century. (ABC : Nathalie Fernbach )

Year 12 student Khaden Turner rescued his 1943 Buzacott crank-start engine from a swamp in Maryborough where it had been submerged for 10 years. Khaden spent four months restoring it and hopes to study mechanics after graduation. "[People] can't believe how old I am to be doing it and to have the knowledge to do it because I am only 17," he said. (ABC : Nathalie Fernbach )

Organisers estimate more than 5000 people attended over the three days, with exhibitors from all over Australia.

More than 300 immaculately restored tractors, engines and cars from the 1910s to the 2000s were on display.

Year 12 Ingham student Khaden Turner, who was exhibiting his first restoration effort - a 1943 crank-start engine, says it's great to be able to showcase old technologies.

"It is good to show the public and the young kids what we used to use, and what they used to use back in the old days," he said.